my customer has single Bosch wall oven model HBN645avc,ser #FDB110106867,has heat on bake and broil with door open but no heat with door closed.yet self clean workds with door closed.I have no clue.Any suggestions?

Hello Krazytech,I was not sure what the problem was,I was just asking to see anybody had such incidents before.The symptom is strange.I may need to pass it on to a Bosch repairman.Thanks for the advice.I will wait for more replies before going back to that job.

I talked to the Bosch repairman who fixed the said wall oven.He said this same break-down happens quite often so he knew the problem right away.One time he asked the Bosch experts about this problem.They told him it was the circuitry inside the selector switch defective.There was no obvious spark or burnt marks.It would have taken several hours of tedious testing to find this solution.So there it is,a selector switch causing this misleading problem.